JPH0689016A - Film splicer and film developing machine - Google Patents

Abstract

PURPOSE:To correct curling of a film before development and to avoid troubles during carrying the film for development and printing. CONSTITUTION:An exposed film 22 is drawn from the film cartridge 20. This film 22 after drawn is spliced in a splicing zone 11 with the rear end of the preceeding film already spliced to make a long-length film. After splicing films, film 22 is introduced to a correcting zone 12 and passed between heat rollers 41 and dancer rollers 42 so that curling of the film is corrected. After curling is removed, the film is wound on a reel 51. In the film developing machine, after curling of the film is removed, the film is developed in a developing zone and wound on a reel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film splicer and a film developing machine, and more particularly to a film splicer and a film developing machine having a function of correcting the curl of the film.

[0002]

2. Description of the Related Art In a large-scale development laboratory, a film splicer is used to lengthen a length of about 50 to 100 films in order to efficiently perform a developing process and a baking process. The conventional film splicer pulls out the exposed film from the set photo patrone,
It is wound on a reel after being spliced to the back end of the already spliced film.

[0003]

The 135 type roll film has triacetyl cellulose (T) as a base.
(AC) is used, but a curl occurs during storage in the cartridge. If this curl is strong,
The leading edge of the film may be caught inside the splicer or the film developing machine, which may cause a trouble in transporting the film. When this film transport trouble occurs, the film is bent in the middle, and the shadow of that part appears in the print photograph. Further, the poor flatness of the film leads to deterioration of print quality.

Recently, when the tip of the film is completely wound in the cartridge and the spool is rotated,
There is known a photographic patrone in which the leading end of the film is sent out (for example, Japanese Patent Application Laid-Open No. 4-124654). In this photo patrone, an elongated plastic patrone with a small diameter is used, and the film is tightly wound therein. In the photographic patrone having this cueing function, the above-mentioned problems are likely to occur because of the strong curl. Further, there is also known a photographic cartridge having a photographic film coated with a transparent magnetic recording layer in a cartridge having a cueing function (for example, Japanese Patent Laid-Open Publication No. Sho 4).
No. 119347). This film also has a strong winding habit. Further, when PET (polyethylene terephthalate) is used as the base of the film, the curl becomes stronger.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a film splicer and a film developing machine which are capable of preventing the occurrence of film transport troubles by correcting the curl of the film.

[0006]

In order to achieve the above object, the film splicer according to claim 1 has means for drawing out the film before development from the cartridge and means for correcting the curl of the drawn film. The film is pulled out from the film cartridge, or the film is removed from the film cartridge, and the lengthened film is formed by joining the film whose curl is corrected.

According to a second aspect of the present invention, there is provided a film developing machine in which a film before development is pulled out from the cartridge, a means for correcting the curl of the drawn film, a means for separating the drawn film from the film cartridge, and a winding means. A means for joining the films whose habits have been corrected to lengthen them and a means for developing the long films are provided.

The curl correction means according to claim 3 is located between the plurality of heat rolls for heating by contacting the base surface of the film and forming a loop of the film. It is composed of dancer rolls and.

[0009]

In the film splicer, the curl correction means is provided before or after the joining means so that the curl is corrected and then wound up. Therefore, at least in the post-process of the curl correction means, the leading end of the film is a guide or the like. It does not get caught in. Further, since the curl is corrected by the plurality of heat rollers and the plurality of dancer rollers, the curl can be continuously corrected by a simple device. In the film developing machine, after the exposed film has the curl rectified, it is developed in the developing section and then wound up.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 2 shows a film splicer of the present invention. The film drawing section 10 draws the exposed film from the set photographic cartridge and sends it to the joining section 11. The joining portion 11 joins the leading end of the exposed exposed film to the trailing end of the already joined film to form, for example, a long film in which about 50 to 100 films are joined together. After the joining, the curl correction unit 12 corrects the curl of the film, and the winding unit 13 winds the film into a roll.

FIG. 1 shows an example of the film splicer shown in FIG. The inside of the film feeding section 10 is in a dark room, and when setting the photographic cartridge 20, a lid (not shown) is opened and the cartridge table 2
Can be placed on top of 1. The stopper 23 is a cartridge 20.
The front surface of b is received so that the cartridge 20b does not move when the exposed film 22 is pulled out. The drive shaft 24 is axially movable by a shift mechanism (not shown), and engages with the spool 20a of the photographic cartridge 20 when moving forward.

As is well known, the photographic cartridge 20 has a cueing function, and a spool 20a is provided by a drive shaft 24.
When the spool is rotated in the opposite direction to the winding direction, the spool 2
0a and the roll of the exposed film 22 rotate integrally. During this rotation, the tip of the film is separated by a separation claw (not shown) provided in the cartridge 20b. The leading edge of this film passes through the film outlet and passes through the cartridge 20b.
Is ejected to the outside and is caught in the pull-out roller pair 25.
After this engagement, the drive shaft 24 is removed from the spool 20a, and the spool 12 becomes free. A cutter 26 is arranged between the pull-out roller pair 25 and the cartridge table 21. The cutter 26 is used for cutting off the leading end of the film and separating the trailing end of the film.

The exposed film 22 drawn from the film drawing section 10 is sent to the joining section 11 through the light shielding passage 30 in the shape of a rectangular tube. The joining portion 11 is provided with a joining head 34 that holds the splice tape 32 cut into a predetermined length and descends toward the receiving table 33. In front of the splicing head 34, a sensor 35 for detecting the cut film front end 22a and the cut film rear end.
Are arranged. This sensor 35 is the tip 2 of the film.
After detecting 2a, the film leading end 22a is positioned at the splice position on the receiving table 33 by feeding the film by a predetermined amount.

After the leading end 22a of the film is set on the pedestal 33, the splicing tape 32 causes the rear end 3 of the joined film 31 to move downward.
It is joined to 1a. In the case of the first film,
The leading end of the first film is joined to the rear end of the previously set film leader. The joined film is stored in the film reservoir 36 for a fixed length. The film reservoir 36 is composed of two pairs of film feed rollers 37 and 38, and the film is stored between the rollers in a loop shape due to the difference in the film feed speed between the roller pairs 37 and 38. The loops are used to correct the difference from the film feeding speed of the curl correction unit 12.

The film passing through the film reservoir 36 is sent to the curl correction unit 12 through the light-shielding passage 40.
The curl correction unit 12 is composed of three heat rollers 41 arranged at appropriate intervals, and two dancer rollers 42 vertically movable between them. Each heat roller 41 has a built-in heater,
Rotate by touching the base surface of the film. The film is
Since it is heated in a state of being curved toward the base surface side, the curl which rounds toward the emulsion surface side is removed. Further, the dancer roller 42 removes the slack of the film and gives a constant tension to the film.

The curl correction section 12 preferably adjusts the amount of heating and the contact time according to the degree of curl. For example,
When the degree of curl is large, the heating amount of the heat roller 41 is increased and the film contact time with the heat roller 41 is lengthened. For this purpose, a sensor for detecting the degree of curl or a sensor for identifying the film type is provided to detect the degree of curl. On the other hand, the relationship between the degree of curl and the heating amount and rotation speed of the heat roller 41 is
It is obtained in advance by experiments or the like, and this is written in the memory as control data. Then, the control data is read according to the degree of curl detected by the sensor, and the heat roller 41
It is controlled by the temperature and rotation speed.

The film whose curl has been corrected has a light-shielding passage 5
It is sent to the winding unit 13 via 0. This winding part 13
As is well known, the reel 51 includes a reel 51 that is rotated by a motor, and a long film is wound around the outer circumference of the reel.

Next, the operation of the above embodiment will be briefly described. Photo Patrone 20 requested to print at the same time
One by one is taken out and set on the cartridge stand 21 of the film drawer 10. After this set, drive shaft 2
4 moves forward and engages with the spool 20a of the photographic cartridge 21. Since the exposed film 22 is completely wound around the photographic cartridge 20, when the spool 20a is rotated by the drive shaft 24, the roll of the exposed film 22 rotates integrally with the spool 20a. During this rotation, the tip of the film is picked up by the separating claw and sent out from the cartridge 20b.

When the leading edge of the film delivered from the cartridge 20b reaches the cutter position, the rotation of the drive shaft 24 is temporarily stopped. During this stop, the cutter 26 descends and cuts the leading end of the film at a right angle. After the cut-off, the drive shaft 24 rotates again, so that the newly formed film tip 20a is transferred and caught by the pull-out roller pair 25. Immediately after this, the drive shaft 24 retracts and disengages from the spool 20a. After that, a pair of drawer rollers 2
By the rotation of 5, the film 22 is continuously pulled out from the cartridge 20b.

When the sensor 25 detects the leading edge 22a of the film, the pull-out roller pair 25 rotates for a predetermined amount and then stops. At this time, the film tip 22 is placed on the receiving table 33.
a is set. The joining head 34 descends while holding the splice tape 32, and the film tip 22a
The film and the rear end 31a of the film are joined by a splice tape 32 to make the film longer. After this joining, the pair of drawing rollers 25,
Since the feed roller pair 37 rotates, the drawing of the film 22 from the cartridge 20b is restarted, and the film 22 is fed to the film reservoir 36, where it is stored in a loop.

Since the rear end of the film is locked to the spool 20a, all the films 22 are in the cartridge 20b.
When pulled out, the load of the drawer suddenly increases.
When this increase in load is detected, the pull-out roller pair 2
5. After the rotation of the feed roller pair 37 is stopped, the cutter 26 is operated to separate the rear end of the film 22.

After the rear end of the film is separated, the pull-out roller pair 25 and the feed roller pair 37 rotate again, so that the rear end of the film is conveyed toward the receiving table 33. And
When the sensor 35 detects the rear end of the film, the rotation of the pull-out roller pair 25 and the feed roller pair 37 is stopped after a predetermined rotation, and the rear end of the film is set on the pedestal 33.

The film stored in the film reservoir 36 is sent to the curl correction unit 12 by the rotation of the feed roller pair 38. In the curl correction unit 12, the curl is removed and the curl is flattened because the heat roller 41 heats the base surface while curving toward the base surface. The film from which the curl is removed is wound on the reel 51 by the winding section 13.

After the empty cartridge 20b is taken out and a new photographic cartridge is set in the film drawer 10, as described above, the exposed film is pulled out, joined, and the curl is corrected. A long film is produced by joining 100 exposed films.
The reel 51 wound with the long film is set in the film developing machine, and the developing process is performed in the long state. The long film which has been developed is subjected to film inspection and then printed.

In addition to removing the curl by the heat roller 41, as shown in FIG. 3, after spraying steam or fine water droplets onto the film 55 through the spraying header 56, the film is dried by the heater 57. , You can also correct the curl. Excess steam, water, etc. are collected using the suction pipe 58 and the drainage pipe 59.

Further, as shown in FIG. 4, a coating roller 62 is arranged in a water tank 61, and a film 63 is brought into contact with the coating roller 62, so that water 64 is coated on the film 63, whereby the curl May be corrected. In addition to this, the film 63 may be directly put in water by a guide roller.

In the above-described embodiment, since the curl correction portion 12 is arranged after the joint portion 11, when the stock amount of the film reservoir 36 decreases due to the film joining, the film transport in the curl correction portion 12 is reduced. Stop. Therefore, the heating state becomes unstable, and unevenness in correcting the curl occurs. FIG. 5 shows an embodiment in which the heating amount of the film can be kept constant, and the same parts as those in FIG. 2 are designated by the same reference numerals.

In this embodiment, the curl correction portion 12, the buffer portion 14, and the joint portion 11 are arranged in this order after the film drawing portion 10. The buffer section 14 has the same structure as the film reservoir 36, and the film is stored therein. The buffer portion 14 absorbs the irregular conveyance of the joint portion, so that the film conveyance speed in the curl correction portion 12 can be kept constant. Therefore, since the heating state becomes constant, the curl can be uniformly corrected. Further, since the curl is corrected early, it is possible to prevent a transport trouble from occurring in the subsequent steps, for example, the joint portion 11 and the like.

FIG. 6 shows a film developing machine, and the same parts as those in FIG. 2 are designated by the same reference numerals. In this embodiment, the developing unit 15 is arranged between the curl correction unit 12 and the winding unit 13. Note that, as shown in FIG. 5, the curl correction portion 12 may be arranged in front of the joint portion 11.

FIG. 7 shows an example of the film developing machine shown in FIG. 6, and the same parts as those shown in FIG. 1 are designated by the same reference numerals. The developing section 15 has a light-shielding passage 7 on the inlet side.
1 is connected to the curl correction portion 12, and the exit side is a passage 7
It is connected to the winding unit 13 via 2.

The developing section 15 includes a developing tank 73 and a fixing tank 7.
4, a rinse tank 75, and a dryer 76 are sequentially arranged.
After the joining, the exposed film from which the curl is removed enters the developing tank 73 through the light-shielding passage 71, is dipped in the developing solution at a constant speed determined according to the type of the film, and is subjected to the development treatment in the meantime. It The film that has passed through the developing tank 73 enters the fixing tank 74 for fixing treatment, and then the rinse tank 75 removes the fixing liquid and the like. Finally, after being dried by the dryer 76, it is sent to the winding section 13 through the passage 72 and is wound there. As the dryer 76, a rotatable heat roller for contacting and heating the film, a warm air dryer for blowing warm air onto the film, or the like is used.

Although the photographic cartridge having the cueing function has been described as an example, the present invention can be applied to a commercially available 35 mm photographic cartridge. Since this photograph patrone does not have a cueing function, it is necessary to pull out the leading edge of the film from the patrone using a leader drawer or the like, and then set it in the film drawer 10.

[0033]

As described above, according to the present invention,
Prevents jamming etc. in the film transport path because a curl correction part is provided before or after the exposed part of the exposed film, which is pulled out from the photo cartridge be able to. Further, since high flatness is ensured during photographic printing, print quality is improved. Further, in a film developing machine or a photographic printer, even if a film conveying trouble occurs, since there is no winding tendency, it is easy to remove or push in the film.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of a film splicer of the present invention.

FIG. 2 is a block diagram of a film splicer.

FIG. 3 is a schematic view showing a curl correction unit adapted to apply steam.

FIG. 4 is a schematic view showing a curl correction unit adapted to adhere water.

FIG. 5 is a block diagram of a film splicer in which a curl correction portion is arranged in front of a joint portion.

FIG. 6 is a block diagram of a film developing machine.

FIG. 7 is a schematic view showing an example of a film developing machine.

[Explanation of symbols]

 10 Photo Patrone 22 Film 26 Cutter 35 Sensor 36 Film Reservoir 41 Heat Roller 42 Dancer Roller 51 Reel 56 Spraying Header 62 Water Application Roller 73 Developing Tank 74 Fixing Tank 75 Rinse Tank 76 Dryer

Claims (3)

[Claims] 1. A means for pulling out a film before development from a patrone, a means for correcting a curl of the drawn film, a means for separating the drawn film and the patrone, and a film having a curl corrected. A film splicer, which is provided with means for increasing the length. 2. A means for pulling out a film before development from a film cartridge, a means for correcting a curl of the drawn film, a means for separating the drawn film from the film cartridge, and a film having a curl corrected. A film developing machine provided with means for increasing the length of the film and means for developing the long film. 3. The curl correction means is arranged between a plurality of heat rollers for heating by contacting a base surface of the film and a plurality of dancer rolls forming a loop of the film. 3. The film developing machine according to claim 2, wherein: